Integrated Intelligent Energy ›› 2022, Vol. 44 ›› Issue (12): 56-61.doi: 10.3969/j.issn.2097-0706.2022.12.008

• Integrated Energy System • Previous Articles     Next Articles

Optimal configuration for energy storage system capacity of wind-solar-storage microgrid

ZHOU Chengwei1(), LI Peng1,2(), YU Bin2(), YU Tianyang1(), MENG Wei1()   

  1. 1. Automation college, Nanjing University of Information Science & Technology, Nanjing 210044 , China
    2. Wuxi University,Wuxi 214105, China
  • Received:2022-09-09 Revised:2022-11-05 Online:2022-12-25 Published:2023-02-01

Abstract:

Due to the intermittent and fluctuating characteristics of distributed energies such as solar energy and wind energy, energy storage technology is taken to effectively reduce their output fluctuations and improve their controllability. Based on the analysis on the characteristics of a wind-solar-storage microgrid's output, an optimal capacity allocation model taking the minimum total investment cost, lowest annual load power shortage rate and optimal wind and solar energy abandonment rate of the microgrid system as the optimization objectives is established. The model's optimal capacity allocation schemes under different constraints and operation strategies are obtained by non-dominated sequencing genetic algorithm (NSGA). The results show that the wind-solar-storage microgrid system optimized by the optimal energy storage capacity allocation scheme and NSGA is of a lower total investment cost, and higher power-supply reliability and energy utilization rate.

Key words: distributed energy, micro-grid, energy storage system, NSGA, optimal energy storage capacity allocation, capacity optimization configuration

CLC Number: